body{
  text-align: center;
}
.demo-page{
    max-width: 600px;
    margin: 0 auto;
}
.demo-page > div{
    display: inline-block;
    background-color: #F0F0F0;
    margin: 10px;
    height: 250px;
}
.customClass .dx-submenu .dx-menu-item{
    background-color: #ffc;
    border-bottom: 1px dotted rgba(0,0,0,.2);
}
.customClass .dx-submenu li:last-child .dx-menu-item {
    border: none;
}
